On Jun 23, 1:25 pm, KurtG wrote:
Aroon wrote:
I have noticed that the top of my live rock has developed a bleach
white appearance on most surfaces. Looking around previous posts it
seems like this is a sign of dead coraline algae.

I've have the same thing going. It looks like somebody dipped my rocks
in frosting complete with a few drips down the side.

If it's dead, then is probably also inorganic from carbonate deposits.
This will some times happen during warming, but then I should see the
same thing on my heater.

I'm thinking it's some sort of coraline algae. It only seems to be on
certain rocks or rocks within the same location. If so, I have purple,
pink, deep red, and now white algaes growing.

I need to find somebody with a microscope, so I can take a sample and
have a look at it. Nobody seems to have one just laying around. :-)

--Kurt

today, i noticed that some portions of the white areas have turned
grey. maybe this is a type of algae development??

i have pink areas of coraline, but nothing as widespread as this
bleached white stuff. i just hope my rock isn't dying.

i have microscopes at work. just 50x dissecting scopes though. not
sure what you'd see.